ISSN:
0749-1581
Keywords:
Magic-angle spinning
;
Molecular motion
;
Phase changes
;
Chemistry
;
Analytical Chemistry and Spectroscopy
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
Variable-temperature cross-polarization magic-angle spinning solid-state 13C NMR spectra of bisphenol-F diglycidyl ether were obtained in the temperature range 25-67°C. Dynamic phenomena are observed, and the experimental data are in accord with an inhomogeneous distribution of correlation times, perhaps related to a second-order phase change. Single-pulse excitation experiments under comparable conditions confirmed the presence of motional inhomogeneity, characterized by a fraction of mobile molecules within the sample. Differential scanning calorimetric measurements revealed a phase transition at ca. 50 °C.
Additional Material:
4 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/mrc.1260300515
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